Yes. This is exactly who it is helpful for.
In a way, the change is both positive and negative. It will actually make the entire process much more of a race again. For me, when I was there last week, I was able to have my BG in less than 3 seconds. 10:00:03, and I had boarding group 2. Why? Because I tapped “Join” then “Select All” and then joined. Bam bam bam! Done.
I was able to get such an awesome group because I already practiced this and knew it. But now with the change, EVERYONE will be able to just hit “Join” and then one more click to join. No delays whatsoever in the process. So, if you are going, be sure to have your clock counting down the seconds handy. In my case, my son’s phone was open to the clock app and as it it 9:59:55, we counted down. 5, 4, 3, 2, 1, 10:00, click. (Note, I learned NOT to click right at 10:00, but the 1 second following, because sometimes if you try right as it switches to 10:00, you end up clicking (or, well, dragging possibly) a split second too soon.
With this change in place, now EVERYONE can be as quick about it because no one has to select their party.
This was previously a good tip for those who weren’t in the know. But now, it doesn’t matter. Keep 'em, don’t keep 'em…it doesn’t matter.